//题目：#if #ifdef和#ifndef的综合应用。
//1. 程序分析：
//2.程序源代码：

#include "stdio.h"
#define MAX
#define MAXIMUM(x,y) (x>y)?x:y
#define MINIMUM(x,y) (x>y)?y:x
int main() {
	int a = 10, b = 20;
#ifdef MAX
	printf("\40: The larger one is %d\n", MAXIMUM(a, b));
#else
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#endif
#ifndef MIN
	printf("\40: The lower one is %d\n", MINIMUM(a, b));
#else
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#endif
#undef MAX
#ifdef MAX
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#else
	printf("\40: The lower one is %d\n", MINIMUM(a, b));
#endif
#define MIN
#ifndef MIN
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#else
	printf("\40: The larger one is %d\n", MAXIMUM(a, b));
#endif
}
